/*
* Copyright (C) 2008, 2015 Google Inc.
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
public class NBTest {
@Test
public void testCompareUInt32() {
assertTrue(NB.compareUInt32(0, 0) == 0);
assertTrue(NB.compareUInt32(1, 0) > 0);
assertTrue(NB.compareUInt32(0, 1) < 0);
assertTrue(NB.compareUInt32(-1, 0) > 0);
assertTrue(NB.compareUInt32(0, -1) < 0);
assertTrue(NB.compareUInt32(-1, 1) > 0);
assertTrue(NB.compareUInt32(1, -1) < 0);
}
@Test
public void testCompareUInt64() {
assertTrue(NB.compareUInt64(0, 0) == 0);
assertTrue(NB.compareUInt64(1, 0) > 0);
assertTrue(NB.compareUInt64(0, 1) < 0);
assertTrue(NB.compareUInt64(-1, 0) > 0);
assertTrue(NB.compareUInt64(0, -1) < 0);
assertTrue(NB.compareUInt64(-1, 1) > 0);
assertTrue(NB.compareUInt64(1, -1) < 0);
}
@Test
public void testDecodeUInt16() {
assertEquals(0, NB.decodeUInt16(b(0, 0), 0));
assertEquals(0, NB.decodeUInt16(padb(3, 0, 0), 3));
assertEquals(3, NB.decodeUInt16(b(0, 3), 0));
assertEquals(3, NB.decodeUInt16(padb(3, 0, 3), 3));
assertEquals(0xde03, NB.decodeUInt16(b(0xde, 3), 0));
assertEquals(0xde03, NB.decodeUInt16(padb(3, 0xde, 3), 3));
assertEquals(0x03de, NB.decodeUInt16(b(3, 0xde), 0));
assertEquals(0x03de, NB.decodeUInt16(padb(3, 3, 0xde), 3));
assertEquals(0xffff, NB.decodeUInt16(b(0xff, 0xff), 0));
assertEquals(0xffff, NB.decodeUInt16(padb(3, 0xff, 0xff), 3));
}
@Test
public void testDecodeInt32() {
assertEquals(0, NB.decodeInt32(b(0, 0, 0, 0), 0));
assertEquals(0, NB.decodeInt32(padb(3, 0, 0, 0, 0), 3));
assertEquals(3, NB.decodeInt32(b(0, 0, 0, 3), 0));
assertEquals(3, NB.decodeInt32(padb(3, 0, 0, 0, 3), 3));
assertEquals(0xdeadbeef, NB.decodeInt32(b(0xde, 0xad, 0xbe, 0xef), 0));
assertEquals(0xdeadbeef, NB.decodeInt32(
padb(3, 0xde, 0xad, 0xbe, 0xef), 3));
assertEquals(0x0310adef, NB.decodeInt32(b(0x03, 0x10, 0xad, 0xef), 0));
assertEquals(0x0310adef, NB.decodeInt32(
padb(3, 0x03, 0x10, 0xad, 0xef), 3));
assertEquals(0xffffffff, NB.decodeInt32(b(0xff, 0xff, 0xff, 0xff), 0));
assertEquals(0xffffffff, NB.decodeInt32(
padb(3, 0xff, 0xff, 0xff, 0xff), 3));
}
@Test
public void testDecodeUInt32() {
assertEquals(0L, NB.decodeUInt32(b(0, 0, 0, 0), 0));
assertEquals(0L, NB.decodeUInt32(padb(3, 0, 0, 0, 0), 3));
assertEquals(3L, NB.decodeUInt32(b(0, 0, 0, 3), 0));
assertEquals(3L, NB.decodeUInt32(padb(3, 0, 0, 0, 3), 3));
assertEquals(0xdeadbeefL, NB.decodeUInt32(b(0xde, 0xad, 0xbe, 0xef), 0));
assertEquals(0xdeadbeefL, NB.decodeUInt32(padb(3, 0xde, 0xad, 0xbe,
0xef), 3));
assertEquals(0x0310adefL, NB.decodeUInt32(b(0x03, 0x10, 0xad, 0xef), 0));
assertEquals(0x0310adefL, NB.decodeUInt32(padb(3, 0x03, 0x10, 0xad,
0xef), 3));
assertEquals(0xffffffffL, NB.decodeUInt32(b(0xff, 0xff, 0xff, 0xff), 0));
assertEquals(0xffffffffL, NB.decodeUInt32(padb(3, 0xff, 0xff, 0xff,
0xff), 3));
}
@Test
public void testDecodeUInt64() {
assertEquals(0L, NB.decodeUInt64(b(0, 0, 0, 0, 0, 0, 0, 0), 0));
assertEquals(0L, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0, 0, 0, 0), 3));
assertEquals(3L, NB.decodeUInt64(b(0, 0, 0, 0, 0, 0, 0, 3), 0));
assertEquals(3L, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0, 0, 0, 3), 3));
assertEquals(0xdeadbeefL, NB.decodeUInt64(b(0, 0, 0, 0, 0xde, 0xad,
0xbe, 0xef), 0));
assertEquals(0xdeadbeefL, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0xde,
0xad, 0xbe, 0xef), 3));
assertEquals(0x0310adefL, NB.decodeUInt64(b(0, 0, 0, 0, 0x03, 0x10,
0xad, 0xef), 0));
assertEquals(0x0310adefL, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0x03,
0x10, 0xad, 0xef), 3));
assertEquals(0xc0ffee78deadbeefL, NB.decodeUInt64(b(0xc0, 0xff, 0xee,
0x78, 0xde, 0xad, 0xbe, 0xef), 0));
assertEquals(0xc0ffee78deadbeefL, NB.decodeUInt64(padb(3, 0xc0, 0xff,
0xee, 0x78, 0xde, 0xad, 0xbe, 0xef), 3));
assertEquals(0x00000000ffffffffL, NB.decodeUInt64(b(0, 0, 0, 0, 0xff,
0xff, 0xff, 0xff), 0));
assertEquals(0x00000000ffffffffL, NB.decodeUInt64(padb(3, 0, 0, 0, 0,
0xff, 0xff, 0xff, 0xff), 3));
assertEquals(0xffffffffffffffffL, NB.decodeUInt64(b(0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff), 0));
assertEquals(0xffffffffffffffffL, NB.decodeUInt64(padb(3, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff), 3));
}
@Test
public void testEncodeInt16() {
final byte[] out = new byte[16];
prepareOutput(out);
NB.encodeInt16(out, 0, 0);
assertOutput(b(0, 0), out, 0);
prepareOutput(out);
NB.encodeInt16(out, 3, 0);
assertOutput(b(0, 0), out, 3);
prepareOutput(out);
NB.encodeInt16(out, 0, 3);
assertOutput(b(0, 3), out, 0);
prepareOutput(out);
NB.encodeInt16(out, 3, 3);
assertOutput(b(0, 3), out, 3);
prepareOutput(out);
NB.encodeInt16(out, 0, 0xdeac);
assertOutput(b(0xde, 0xac), out, 0);
prepareOutput(out);
NB.encodeInt16(out, 3, 0xdeac);
assertOutput(b(0xde, 0xac), out, 3);
prepareOutput(out);
NB.encodeInt16(out, 3, -1);
assertOutput(b(0xff, 0xff), out, 3);
}
@Test
public void testEncodeInt32() {
final byte[] out = new byte[16];
prepareOutput(out);
NB.encodeInt32(out, 0, 0);
assertOutput(b(0, 0, 0, 0), out, 0);
prepareOutput(out);
NB.encodeInt32(out, 3, 0);
assertOutput(b(0, 0, 0, 0), out, 3);
prepareOutput(out);
NB.encodeInt32(out, 0, 3);
assertOutput(b(0, 0, 0, 3), out, 0);
prepareOutput(out);
NB.encodeInt32(out, 3, 3);
assertOutput(b(0, 0, 0, 3), out, 3);
prepareOutput(out);
NB.encodeInt32(out, 0, 0xdeac);
assertOutput(b(0, 0, 0xde, 0xac), out, 0);
prepareOutput(out);
NB.encodeInt32(out, 3, 0xdeac);
assertOutput(b(0, 0, 0xde, 0xac), out, 3);
prepareOutput(out);
NB.encodeInt32(out, 0, 0xdeac9853);
assertOutput(b(0xde, 0xac, 0x98, 0x53), out, 0);
prepareOutput(out);
NB.encodeInt32(out, 3, 0xdeac9853);
assertOutput(b(0xde, 0xac, 0x98, 0x53), out, 3);
prepareOutput(out);
NB.encodeInt32(out, 3, -1);
assertOutput(b(0xff, 0xff, 0xff, 0xff), out, 3);
}
@Test
public void testEncodeInt64() {
final byte[] out = new byte[16];
prepareOutput(out);
NB.encodeInt64(out, 0, 0L);
assertOutput(b(0, 0, 0, 0, 0, 0, 0, 0), out, 0);
prepareOutput(out);
NB.encodeInt64(out, 3, 0L);
assertOutput(b(0, 0, 0, 0, 0, 0, 0, 0), out, 3);
prepareOutput(out);
NB.encodeInt64(out, 0, 3L);
assertOutput(b(0, 0, 0, 0, 0, 0, 0, 3), out, 0);
prepareOutput(out);
NB.encodeInt64(out, 3, 3L);
assertOutput(b(0, 0, 0, 0, 0, 0, 0, 3), out, 3);
prepareOutput(out);
NB.encodeInt64(out, 0, 0xdeacL);
assertOutput(b(0, 0, 0, 0, 0, 0, 0xde, 0xac), out, 0);
prepareOutput(out);
NB.encodeInt64(out, 3, 0xdeacL);
assertOutput(b(0, 0, 0, 0, 0, 0, 0xde, 0xac), out, 3);
prepareOutput(out);
NB.encodeInt64(out, 0, 0xdeac9853L);
assertOutput(b(0, 0, 0, 0, 0xde, 0xac, 0x98, 0x53), out, 0);
prepareOutput(out);
NB.encodeInt64(out, 3, 0xdeac9853L);
assertOutput(b(0, 0, 0, 0, 0xde, 0xac, 0x98, 0x53), out, 3);
prepareOutput(out);
NB.encodeInt64(out, 0, 0xac431242deac9853L);
assertOutput(b(0xac, 0x43, 0x12, 0x42, 0xde, 0xac, 0x98, 0x53), out, 0);
prepareOutput(out);
NB.encodeInt64(out, 3, 0xac431242deac9853L);
assertOutput(b(0xac, 0x43, 0x12, 0x42, 0xde, 0xac, 0x98, 0x53), out, 3);
prepareOutput(out);
NB.encodeInt64(out, 3, -1L);
assertOutput(b(0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff), out, 3);
}
private static void prepareOutput(final byte[] buf) {
for (int i = 0; i < buf.length; i++)
buf[i] = (byte) (0x77 + i);
}
private static void assertOutput(final byte[] expect, final byte[] buf,
final int offset) {
for (int i = 0; i < offset; i++)
assertEquals((byte) (0x77 + i), buf[i]);
for (int i = 0; i < expect.length; i++)
assertEquals(expect[i], buf[offset + i]);
for (int i = offset + expect.length; i < buf.length; i++)
assertEquals((byte) (0x77 + i), buf[i]);
}
private static byte[] b(final int a, final int b) {
return new byte[] { (byte) a, (byte) b };
}
private static byte[] padb(final int len, final int a, final int b) {
final byte[] r = new byte[len + 2];
for (int i = 0; i < len; i++)
r[i] = (byte) 0xaf;
r[len] = (byte) a;
r[len + 1] = (byte) b;
return r;
}
private static byte[] b(final int a, final int b, final int c, final int d) {
return new byte[] { (byte) a, (byte) b, (byte) c, (byte) d };
}
private static byte[] padb(final int len, final int a, final int b,
final int c, final int d) {
final byte[] r = new byte[len + 4];
for (int i = 0; i < len; i++)
r[i] = (byte) 0xaf;
r[len] = (byte) a;
r[len + 1] = (byte) b;
r[len + 2] = (byte) c;
r[len + 3] = (byte) d;
return r;
}
private static byte[] b(final int a, final int b, final int c, final int d,
final int e, final int f, final int g, final int h) {
return new byte[] { (byte) a, (byte) b, (byte) c, (byte) d, (byte) e,
(byte) f, (byte) g, (byte) h };
}
private static byte[] padb(final int len, final int a, final int b,
final int c, final int d, final int e, final int f, final int g,
final int h) {
final byte[] r = new byte[len + 8];
for (int i = 0; i < len; i++)
r[i] = (byte) 0xaf;
r[len] = (byte) a;
r[len + 1] = (byte) b;
r[len + 2] = (byte) c;
r[len + 3] = (byte) d;
r[len + 4] = (byte) e;
r[len + 5] = (byte) f;
r[len + 6] = (byte) g;
r[len + 7] = (byte) h;
return r;
}
}